PNEUMATIC TIRE FOR IMPROVING THE HEAT RESISTANCE, DURABILITY, AND AIR-TIGHTNESS BY FORMING PLURAL REINFORCING LAYERS IN A SHOULDER UNIT

摘要

PURPOSE: A pneumatic tire is provided to prevent a tire from being worm away and damaged by heat generated from the inside of a rubber layer in turning and over-steering of a vehicle by forming heat resistance reinforcing layers in the outer surface of a shoulder unit.;CONSTITUTION: In a pneumatic tire, a shoulder unit, a side wall unit, and a bead unit are successively formed around a tread unit. Plural reinforcing layers(100) are formed in the shoulder unit. The reinforcing layers form a part of the outer surface of the shoulder unit. The reinforcing layers reinforce the heat resistance and durability. The reinforcing layers comprise a heat resistance reinforcing layer(110), a durability reinforcing layer(120), and an air-tightness reinforcing layer(130). The heat resistance reinforcing layer forms the outer surface of the shoulder unit. The durability reinforcing layer is formed within the heat resistance reinforcing layer. The air-tightness reinforcing layer prevents the leak of air within the durability reinforcing layer.;COPYRIGHT KIPO 2010